From: Dipesh Gtm <lists@...>
Date: 2012-08-27T23:12:38+09:00
Subject: Re: Finding methods inside a scope

Sorry, I should have posted more code. The code below does not work but
I
think you will get the idea.

class Food
 def plate(&block)
  extend Operators
  include Operations
  instance_eval(&block)
 end


 plate do
  eat do |d|
   d.pepsi, 20
   d.coke, 10
  end
 end

end

module Operations
 attr_accessor :bloc
 def serve(&block)
  @bloc[:serve] = block
 end
 def eat(&block)
  @bloc[:eat] = block
 end
end

module Operators
 def serve!
  @bloc[:serve].call(self)
 end
end

Then, when I do
 Food.new.serve!

I wanted it to trigger the pepsi and coke methods on instance level with
corresponding
arguments. I have not included those methods here though.

I wanted to define my methods inside the Operations module via method
missing. But since it was extended, I was looking for a scope to tie up
to.

But, I got it wrong there. Later, I got around it by doing something
like:

class Food

 def plate(&block)
  @current_scope = __method__
  instance_eval(&block)
  @current_scope = nil
 end

end

module Operations
 def method_missing(m,*a,&b)
  if @current_scope == :plate
   @bloc[:m] = b
  else
   super
  end
 end
end

Hope that made sense. And Thanks. If you guys say there's a better way 
available, I would be happy to post the working code.

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